/*
 * Copyright 2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.data.ebean.util;

import io.ebean.EbeanServer;
import io.ebean.ExampleExpression;
import io.ebean.LikeType;
import org.springframework.data.domain.Example;

/**
 * Build {@link io.ebean.ExampleExpression} from {@link org.springframework.data.domain.Example}
 *
 * @author Xuegui Yuan
 */
public class ExampleExpressionBuilder {

    /**
     * Return a ExampleExpression from Spring data Example
     *
     * @param ebeanServer
     * @param example
     * @param <T>
     * @return
     */
    public static <T> ExampleExpression exampleExpression(EbeanServer ebeanServer, Example<T> example) {
        LikeType likeType;
        switch (example.getMatcher().getDefaultStringMatcher()) {
            case EXACT:
                likeType = LikeType.EQUAL_TO;
                break;
            case CONTAINING:
                likeType = LikeType.CONTAINS;
                break;
            case STARTING:
                likeType = LikeType.STARTS_WITH;
                break;
            case ENDING:
                likeType = LikeType.ENDS_WITH;
                break;
            default:
                likeType = LikeType.RAW;
                break;
        }
        return ebeanServer.getExpressionFactory().exampleLike(example.getProbe(),
                example.getMatcher().isIgnoreCaseEnabled(),
                likeType);
    }
}
